Efficient removal of neodymium from aqueous solution by amino-functionalized SBA-15

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 331; no. 12; pp. 5789 - 5798
• Main Authors: Chen, Li, Xiao, Xin, Yu, Jiaping, Gan, Yi, Chen, Qiaolin, Lu, Chao, Dan, Hui, Ding, Yi
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.12.2022; Springer; Springer Nature B.V
• Subjects: Actinides; Adsorption; Aqueous solutions; Chemistry; Chemistry and Materials Science; Diagnostic Radiology; Hadrons; Heavy Ions; Inorganic Chemistry; Magnetic alloys; Neodymium; Nuclear Chemistry; Nuclear energy; Nuclear Physics; Physical Chemistry; Protonation; Purification; Radioactive wastes; Radiotherapy; Sewage; Wastewater; Wastewater treatment; Protonation; NH; Adsorption; Radioactive wastewater; SBA-15; Trivalent actinides
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-022-08635-0

Removal of trivalent actinides is of great important for the safe treatment of radioactive wastewater. Herein, amino-functionalized SBA-15 materials were prepared and their simulated trivalent actinides (Nd 3+ ) adsorption behaviors were investigated. The Nd 3+ adsorption capacity was found up to 77.8 mg/g mainly due to the protonation of amino groups. The removal rate retained as high as 99.02% in the presence of interfering ions, indicating their good selective. The adsorption can be better fitted with Langmuir and pseudo-second-order model. The main adsorption mechanism was found to be OH − generated from the protonation of –NH 2 combined with Nd 3+ to produce Nd(OH) 3 .